A search of a river is ongoing for a missing 11-year-old boy, now in its third day. However, there are reports that a body has been found in a river and tributes have been paid to an 11-year-old boy named Mackenzie Swift, suggesting the search may have come to an end. The circumstances and outcome of the search are unclear, with some reports indicating a connection to the River Don at Mexborough and others mentioning different locations and individuals.